SIMBAD references

2021ApJ...920L..45A - Astrophys. J., 920, L45-L45 (2021/October-3)

Search for multi-flare neutrino emissions in 10 yr of IceCube data from a catalog of sources.

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Abstract (from CDS):

A recent time-integrated analysis of a catalog of 110 candidate neutrino sources revealed a cumulative neutrino excess in the data collected by IceCube between 2008 April 6 and 2018 July 10. This excess, inconsistent with the background hypothesis in the Northern Hemisphere at the 3.3σ level, is associated with four sources: NGC 1068, TXS 0506+056, PKS 1424+240, and GB6 J1542+6129. This Letter presents two time-dependent neutrino emission searches on the same data sample and catalog: a point-source search that looks for the most significant time-dependent source of the catalog by combining space, energy, and time information of the events, and a population test based on binomial statistics that looks for a cumulative time-dependent neutrino excess from a subset of sources. Compared to previous time-dependent searches, these analyses enable a feature to possibly find multiple flares from a single direction with an unbinned maximum-likelihood method. M87 is found to be the most significant time-dependent source of this catalog at the level of 1.7σ post-trial, and TXS 0506+056 is the only source for which two flares are reconstructed. The binomial test reports a cumulative time-dependent neutrino excess in the Northern Hemisphere at the level of 3.0σ associated with four sources: M87, TXS 0506+056, GB6 J1542+6129, and NGC 1068.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Neutrino astronomy - High energy astrophysics - Particle astrophysics

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 112

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